Unit 8.1 Digestion (Proteins)

Question 1

What are proteins made of and two facts about them?

Answer 1

Proteins are made up of Amino Acids
Proteins are used as a LAST SOURCE of energy
The amount of proteins in the body is HIGH

Question 2

What do proteins help make? (four things)

Answer 2

Enzymes
Blood cells
Antibodies
Cardiac Muscle (heart)

Question 3

What are Amino Acids made up of? How are they joined together?

Answer 3

made of CHO & N

joined together by peptide bonds

Question 4

What determines the protein type of an amino acid?

Answer 4

The order (?)

Question 5

What are chains of amino acids called?

Answer 5

Polypeptides

Question 6

How are proteins made?

Answer 6

Polypeptide chains (amino acids) fold into proteins

Question 7

What happens when a protein becomes denatured?

Answer 7

The protein uncoils and it no longer functions

Question 8

When does denaturing occur?

Answer 8

Denaturing occurs when a protein is exposed to:

Heat

Question 9

What is coagulation?

Answer 9

Permanent change in protein shape

Question 10

What are five ways of food preservation?

Answer 10

Dehydration (drying)

Preservatives (salting)

Radiation

Freezing (slows bacteria growth for w-m)

Refrigeration (slows bacteria growth for d-w)